package com.ruoyi.framework.web.service;

import javax.annotation.Resource;

import org.apache.commons.lang3.tuple.Pair;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.stereotype.Component;

import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.model.LoginUser;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.exception.CustomException;
import com.ruoyi.common.exception.user.CaptchaException;
import com.ruoyi.common.exception.user.CaptchaExpireException;
import com.ruoyi.common.exception.user.UserPasswordNotMatchException;
import com.ruoyi.common.utils.MessageUtils;
import com.ruoyi.framework.manager.AsyncManager;
import com.ruoyi.framework.manager.factory.AsyncFactory;

/**
 * 登录校验方法
 * 
 * @author ruoyi
 */
@Component
public class SysLoginService {
	@Autowired
	private TokenService tokenService;

	@Resource
	private AuthenticationManager authenticationManager;

	@Autowired
	private RedisCache redisCache;

	@Autowired
	private UserDetailsService userDetailsService;

	/**
	 * 登录验证
	 * 
	 * @param username
	 *            用户名
	 * @param password
	 *            密码
	 * @param code
	 *            验证码
	 * @param uuid
	 *            唯一标识
	 * @return 结果
	 */
	public String login(String username, String password, String code, String uuid) {
		String verifyKey = Constants.CAPTCHA_CODE_KEY + uuid;
		String captcha = redisCache.getCacheObject(verifyKey);
		redisCache.deleteObject(verifyKey);
		if (captcha == null) {
			AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL,
					MessageUtils.message("user.jcaptcha.expire")));
			throw new CaptchaExpireException();
		}
		if (!code.equalsIgnoreCase(captcha)) {
			AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL,
					MessageUtils.message("user.jcaptcha.error")));
			throw new CaptchaException();
		}
		// 用户验证
		Authentication authentication = null;
		try {
			// 该方法会去调用UserDetailsServiceImpl.loadUserByUsername
			authentication = authenticationManager
					.authenticate(new UsernamePasswordAuthenticationToken(username, password));
		} catch (Exception e) {
			if (e instanceof BadCredentialsException) {
				AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL,
						MessageUtils.message("user.password.not.match")));
				throw new UserPasswordNotMatchException();
			} else {
				AsyncManager.me()
						.execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, e.getMessage()));
				throw new CustomException(e.getMessage());
			}
		}
		AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_SUCCESS,
				MessageUtils.message("user.login.success")));
		LoginUser loginUser = (LoginUser) authentication.getPrincipal();
		// 生成token
		return tokenService.createToken(loginUser);
	}

	/**
	 * 登录验证
	 * 
	 * @param username
	 *            用户名
	 * @return 结果
	 */
	public Pair<String, LoginUser> loginByDingTalk(String username) {
		try {
			// 用户验证
			LoginUser loginUser = (LoginUser) userDetailsService.loadUserByUsername(username);
			AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_SUCCESS,
					MessageUtils.message("user.login.success")));
			// 生成token
			String token = tokenService.createToken(loginUser);
			return Pair.of(token, loginUser);
		} catch (Exception e) {
			AsyncManager.me().execute(AsyncFactory.recordLogininfor(username, Constants.LOGIN_FAIL, e.getMessage()));
			throw new CustomException("用户认证失败，请与管理员联系！", e);
		}

	}
}
